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脱除H2S用铁/凹凸棒石的优化制备及性能评价

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张智宏, 梁慧军, 杜晓刚, 左晓亮. 脱除H2S用铁/凹凸棒石的优化制备及性能评价[J]. 环境化学, 2012, 31(12): 1990-1995.
引用本文: 张智宏, 梁慧军, 杜晓刚, 左晓亮. 脱除H2S用铁/凹凸棒石的优化制备及性能评价[J]. 环境化学, 2012, 31(12): 1990-1995.
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ZHANG Zhihong, LIANG Huijun, DU Xiaogang, ZUO Xiaoliang. Optimization of preparation conditions and performance evaluation of Fe/attapulgite for H2S removal[J]. Environmental Chemistry, 2012, 31(12): 1990-1995.
Citation: ZHANG Zhihong, LIANG Huijun, DU Xiaogang, ZUO Xiaoliang. Optimization of preparation conditions and performance evaluation of Fe/attapulgite for H2S removal[J]. Environmental Chemistry, 2012, 31(12): 1990-1995.
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脱除H2S用铁/凹凸棒石的优化制备及性能评价

  • 1.

    常州大学石油化工学院, 常州, 213164

  • 基金项目:

    国家重大科学研究计划项目(2006CB932504)

    江苏省高校自然科学研究计划项目(01KJB530004)资助.

Optimization of preparation conditions and performance evaluation of Fe/attapulgite for H2S removal

  • 1.

    School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China

  • Fund Project:

  • 摘要: 用均相沉淀法制备了铁/凹凸棒石复合物用于H2S的脱除.考察了反应物配比、反应时间和反应温度对铁转化率、体系pH值和Fe3+浓度变化的影响;用透射电镜对不同条件制得的脱硫剂的形貌进行了表征,以模拟工业尾气为气源做H2S动态吸附实验.结果表明,体系pH值的上升是Fe3+完全沉淀的标志;体系OH-浓度主要受反应温度的影响,升高反应液温度有利于提高铁转化率,而反应物配比对其影响不大;升高温度会使沉淀速度过快,引起凹凸棒石表面铁分散性下降,形貌发生变化,导致脱硫剂性能下降.
    Abstract: The Fe/attapulgite desulfurizers for H2S removal were prepared by homogeneous precipitation. The effects of preparation conditions on the conversion efficiency of iron, pH and Fe3+ concentration were investigated by changing the reactant ratio, reaction time and temperature. The morphology of desulfurizers prepared under various conditions was characterized by transmission electron microscopy (TEM). Dynamic adsorption experiments were carried out with simulated industrial off-gases as gas source. The results showed that the conversion efficiency of ferric increased with reaction temperature rather than the reactant ratio, because the concentration of OH- in the system strongly depends on the reaction temperature. The increase of pH value in the solution is a sign of complete precipitation of Fe3+. At the elevated temperature, the accelerated sedimentation caused the dispersion of iron substance on the attapulgite to reduce and its morphology to change. Therefore, the sulfur capacity of desulfurizers declined.
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  • [1] 高子群,胡旭东,吴幼青,等.煤的化学脱硫研究[J].环境化学,1994,(6):486-491
    [2] 侯相林,高荫本,陈诵英.几种金属氧化物TPS性能比较[J].环境化学,1998,(2):154-158
    [3] 张金昌,吴迪镛,王树东,等.高温脱除H2S的Mn-Fe/Al2O3脱硫剂研究[J].环境化学,1999,(6):513-518
    [4] 马建蓉,刘守军,刘振宇,等.制备条件对Fe/AC脱硫活性的影响[J].环境化学,2002,(1):26-31
    [5] 宋庆锋,张永春,周锦霞.铁盐改性活性炭纤维常温脱除硫化氢的研究[J].现代化工,2007,(1):272-276
    [6] Wang X,Jia J,Zhao L,et al.Mesoporous SBA-15 supported iron oxide: A potent catalyst for hydrogen sulfide removal[J].Water, Air, and Soil Pollution,2008,193(1/4):247-257
    [7] 张智宏,张少瑜,刘雪东,等.凹凸棒石基脱硫剂的制备及其性能评价[J].化工学报,2010,61(5): 1319-1324
    [8] Music S,Maljkovic M,Czakó-Nagy I.Effect of urea on the hydrolysis of Fe3+ ions in aqueous solutions at elevated temperature[J].Materials Letters,1997,31(1/2):43-48
    [9] Liu X,Wang H,Su C,et al.Controlled fabrication and characterization of microspherical FeCO3 and α-Fe2O3[J].J Colloid Interface Sci,2010,351(2):427-432
    [10] Asuha S,Zhao S,Jin X H,et al.Effects of synthetic routes of Fe-urea complex on the synthesis of γ-Fe2O3 nanopowder[J].Applied Surface Science,2009,255(21):8897-8901
    [11] 许小荣.均匀沉淀法制备纳米氧化铁及工艺优化[J].无机盐工业,2009,41(6):14-16
    [12] Matijevic' E,Scheiner P.Ferric hydrous oxide sols: Ⅲ. Preparation of uniform particles by hydrolysis of Fe(Ⅲ)-chloride, -nitrate, and -perchlorate solutions[J].Journal of Colloid and Interface Science,1978,63(3):509-524
    [13] 郑大中,魏书云.矿石中铁的快速测定-强酸度、小体积碘量法[J].化学世界,1980,(7):207-209
    [14] 能源部西安热工研究所.DL 422.3—1991.工业盐酸中铁含量的测定-邻菲罗啉光度法[S].北京:行业标准-电力,1991
    [15] 刘树信.均匀沉淀法制备α-Fe2O3超细粉体的研究[J].人工晶体学报,2009,38(1): 281-284
    [16] Deliyanni E A,Bakoyannakis D N,Zouboulis A I,et al.Akaganéite-type β-FeO(OH) nanocrystals: Preparation and characterization[J].Micro-porous and Mesoporous Materials,2001,42(1):49-57
    [17] Xu Y,Yang S,Zhang G,et al.Uniform hematite α-Fe2O3 nanoparticles: Morphology, size-controlled hydrothermal synthesis and formation mechanism[J].Materials Letters,2011,65(12):1911-1914
    [18] Saric A,Music S,Nomura K,et al.Microstructural properties of Fe-oxide powders obtained by precipitation from FeCl3 solutions[J].Materials Science and Engineering B,1998,56(1):43-52
    [19] 郭汉贤,梁生兆,苗茂谦,等.常温氧化铁脱硫剂连续再生的研究[J].煤气与热力,1988,(5):17-28
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  • 收稿日期:  2012-02-25

脱除H2S用铁/凹凸棒石的优化制备及性能评价

  • 1. 常州大学石油化工学院, 常州, 213164
  • 收稿日期:  2012-02-25
基金项目:

国家重大科学研究计划项目(2006CB932504)

江苏省高校自然科学研究计划项目(01KJB530004)资助.

摘要: 用均相沉淀法制备了铁/凹凸棒石复合物用于H2S的脱除.考察了反应物配比、反应时间和反应温度对铁转化率、体系pH值和Fe3+浓度变化的影响;用透射电镜对不同条件制得的脱硫剂的形貌进行了表征,以模拟工业尾气为气源做H2S动态吸附实验.结果表明,体系pH值的上升是Fe3+完全沉淀的标志;体系OH-浓度主要受反应温度的影响,升高反应液温度有利于提高铁转化率,而反应物配比对其影响不大;升高温度会使沉淀速度过快,引起凹凸棒石表面铁分散性下降,形貌发生变化,导致脱硫剂性能下降.

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